Contact device for electrically-wound mechanisms.



B. P. KESSLER. I CONTACT DEVICE FOR ELEO TRIGALLY WOUND MECHANISMS.

APPLICATION FILED $113.9, 1909.

' Patented Feb. 1, 19m.

nmntoz UNITED STATES PATENT OFFICE.

BENJAMIN F KESSLER, 0F MOUNT QARMEL, PENNSYLVANIA. f

ainsei.

Specification of Letters Patent.

CONTACT DEVICE FOR ELEQTRICALL Y-WOUND MECHANISMS.

Application filed February 9, 1909. Serial No; 477,031.

To all whom it may concern: 1

Be it known that I, BENJAMIN F. Knes- LER, a citizen of the UnitedStates, resident of Mount Carmel, in the county of Northumberland andState of Pennsylvania, have made a certain new and usefulInvention inContact Devices for Electrically-Wound Mechanisms; and I declare thefollowing to be a full, clear, and exact description of the same. suchas will enable others skilled in the art to which it appertains to makeand use the invention, reference being had to the accompanyindrawings,-and to letters or figures of rel e form a part of thisspecification.

Figure 1 is a sectional-view showing my invention as applied. Fig. 2 isa detail view of the liquid contact chamber. Fig. 3 is a longitudinalsectional view of the same on a larger scale.

The invention relates to certain newand' useful improvements inelectrically wound clocks and other electrically wound mechanisms, andparticularly relates to the so- .called liquid contact chamber of theinvention disclosed in U. S. Patent Number 830,473, dated Sept. 4, 1906.

In the liquid contact'chamber of the patent referred to it has beenfound'in practice thatobjectionable corroding action is set up withinthe chamber, which results in interference with the circuit'making andbreak-- ing to such extent as to render the operation of the clockunreliable.

My invention has for. its object to overcome this objectionablecorroding actionand to render the clock a reliable timepiece.

The invention consists in the novel'construction and combinations ofparts as hereinafter set forth. i

In the accompanying drawings, illustrating the invention, the letter a,designates the liquid contact chamber which consists in the present caseof a glass tube or hollow chamber 1), sealed at each end by the materialof which it is composed, and wherein the mercury c, forming the mediumthrough which the electrical connection is established, is locatedandhas' movement from one end of the chamber to the other. s

A tubular protective and inclosing casing b", of brass or other suitablematerial, is provided for the glass chamber 6, and through which theconnection with the mechanism for moving the chamber is made.

rence marked thereon, which At the endof the chamber 6, which is theupper end when the circuitis broken,'are located the two straightparallel electrodes d, and e, which are preferably platinum wires andhave their inner ends and c, with which the mercury contacts in makingthe circuit, sealed within the glass chamber, small holes being firstmade in the chamber 'or tube, and the platinum wire electrodes insortedand sealed in position by means of glass cement f, f. The outer ends ofthe electrodes project beyond the glass chamber and are provided witheyes or loops f, f, for the wiring connections. In this way the circuitis made and broken and the operation of the clock is otherwise the. sameas in the patent referred to while there can be possible and is nocorrosion of the electrodes nor of the liquid contact chamber or tube.

The invention is applicable to any electrically wound mechanism.

A non-conducting plug g, fits in one end of the tubular casing over theliquid contact chamber therein and is providedwith perforations g, g,through which the electrodes cl, and a, project and with the walls ofwhich they have bracing contact. The rocking arm it, of the electricallywound mechanism is attached to the end of the tubular -easing oppositethe plugged end thereof.

Having thus described my invention,.what

Patented Feb. 1, 191 0.

I claim as new and desire to secure by Let ters Patent is: v

In an electrically wound mechanism of the character set forth, thecombination with a tubular glass contact-chamber having at one endstraight parallel platinum electrodes extending into said chamber,projecting bei yond the end thereof and terminating in wiring attachmentloops, a mercury body

